Answer:
A: 5 hrs. B: 14 hrs. and 40 min.
Step-by-step explanation:
too long to explain.
The area will be:
A=x(25-x)
A=25x-x^2
For the area to be maximize the rate of change of area will be zero, or dA/dx=0
dA/dx=25-2x
25-2x=0
2x=25
x=12.5
So the dimensions will be 12.5 and (25-12.5)=12.5. Thus the greatest area possible with 50 foot of fencing is a square with sides of 12.5 feet.
(A square always results in the greatest possible area for a rectangular plane for a given amount of material...so in general, all such problems will result with dimensions of a square with sides equal to the material divided by four.)
Answer:
y=4x+7.75; continuous
Step-by-step explanation:
Let's get the equation first. So she needs one piece that's 7.75 inches long: that's a given.
y = 7.75
Now for each piece of yarn - and she needs 4 pieces - they will be x length. If she wanted them to be 1 inches in length, she would use 4 inches of yarn. So multiply those:
<u>y = 7.75 + 4x</u>
So is this graph discrete or continuous? Remember that continuous means no holes, not stopping, a nice line. Discrete means it has holes or gaps. (In science, we would call discrete "quantized.") In this case, x will be <u>continuous, </u>because Julie can cut any length of yarn for the 4 pieces. She need not choose an integer value. Each piece could logically be 2.5 inches, or 3.1415 inches.
Answer:
poosjsjdwjqisnsjjdd
Step-by-step explanation: